Add hrs3300 write_reg and read_reg to simulator

Signed-off-by: Francesco Gazzetta <fgaz@fgaz.me>

wasp/boards/simulator/watch.py

@@ -155,6 +155,12 @@ class HRS():
         self._i = 0
         self._step = 1
 
+    def read_reg(self, addr):
+        pass
+
+    def write_reg(self, addr, val):
+        pass
+
     def enable(self):
         pass